millot



(No Model.) 3 sheets-sheet 1.

A. M'ILLOT.

GRINDING MILL. No. 416,371. Patented Dec. 3, 1889.

ld ,m0/nunsy N. PETERS, mom-umnmpner. wnhmgm. DA c.

(No Modevl.) 3 Sheets-Sheet 2. A. MILLOT.

GRINDING MILL. No. 416,371. Patented Dec. 3, 1889.

@ Arron/vm (No Model.) a sheets-sheets.

A. MILLOT.. GRINDING MILL.

No. 416.371. Patented Dec. 3, 1889.

4W ,Arron/VHS UNITED STATES PATENT OFFICE.

` AMBROISE MILLOT, OF ZURICH, SVITZERLAND.

GRlNDlNG-MILL.

SPECIFICATION forming part of Letters Patent No. 416,371, dated December 3, 1889. Application led August 1, M588. Serial No. 281,709. (No model.)

.To all whom. it may concern:

Be it known that I, AMBRoIsE MILLOT;

manufacturer, of Zurich, in the Republic of Switzerland, have invented Improvements in Grinding-Mills, of which the following is a specification.

The'object of this invention is to provide an eicient and economical apparatus for decorticating, splitting, reducing, and cleaning corn or other grain or seed, removing from it impurities-such as poppy-seeds, smut, and the like-with but little waste of the good material. l will describe it as applied to the treatment of corn, from which its general application will also be well understood.

In the accompanying drawings, Figure l is a vertical section. Fig. 2 is a side elevation, and Fig. 3 is partly a plan and partly a horizontal section of an apparatus arrangedaccording to this invention. Fig. 4 is an under side view of the cover of the apparatus fitted with the working-surfaces. Figs. 5 and 6 are sections on a .larger scale of the lower and upper disks taken on lines 5 5 6 6, respectively.

The corn to be treated is introduced by the hopper A, which is capable of being raised and lowered by the hand-wheel B and screw working on a screw outside the hopper A. The corn is scattered by the rotary distributingplate c over the sieve or grating D, by which foreign bodies larger than the grains of corn are kept from entering into the apparatus. After passing through openings H in a ring J the corn is drawn between two grindingdisks F. and F. The upper disk F is made up of segments of cast-iron, tempered steel, porcelain, flint, granite, or any other suitable hard material, which segments are attached (by means of screws, for instance) to the lid F', fixed to the frame U of the apparatus. The segments F are provided with grooves of any suitable width and depth and at any desired angle. The lower disk E is composed of segments, also of hard material, and having any desired number of projections and spaces forming the working-surfaces of the apparatus, as shown in Figs. 3 and 5. The segments are screwed or otherwise secured to the plate E', which rotates in the direction shown by the arrow coin Fig. 3. These different segments consist, first, of a triangular groove L, haying one side open to receive the grain and one side inclined upward to the land M, .whereon the grain is split. Beyond this land M is the groove O, opening only to the outer edge of the disk. The wall Pshuts off the groove L from the groove 0 and closes the groove L at the outer edge of the disk.

The openings in the ring J are placed at the opening to the triangular groove L, so that the grain passing through the openings H enters into the recesses L (see Figs. 3 and 5) of the segments E, where it is spread over their whole breadth and driven by centrifugal force onto the inclined plane M, where the splitting takes place during its progress to the highest point N, after which the material falls into the recesses O and is taken to the circumfer- 'ence of the plate E and then drawn to the outlet Q by the gatherers Q Q, fixed under the said plate E. The sides, partitions, or ribs P allow the corn to pass out only by the inclined planes M and prevent it passing unacted upon through the machine.

The above description applies to the de- 'corticating, opening, and splitting of grains of corn or the like; but the apparatus is applicable also for reducing Orcrushing in the manufacture of grits or the like, similar segments being employed for this purpose, with the necessary increase of workingsurface and additional grooves of the proper breadth and angles. The plate or disk E is rotated bya vertical shaft R, which may be supported in a step-bearing R4, and in an upper bearing R with arms R2, bolted onto the brackets R3. The shaftR is driven by Aa pair of bevelwheels S from the shaft S2 and pulley T. The whole is mounted in a rigid frame-work U. There may be two doors Q2, to facilitate the inspection and adjustment of the disks E and F, which adjustment maybe effected by means of lever V, operated by the `hand-wheel and screwed shaft W for raising the step-bearing R4, or by any other suitable adjusting device. The entrance-passages H for the corn between the disks E F, made in the ring J, as shown in Fig. 3, prevent the corn being operated upon before entering the divisions of the segments K, the corn being distributed through these passages to the recesses L, and then a secondV distribution takes placedver the surfaces to the outlet-passages, as aforesaid, and

ICO

accumulation of corn on the working-surfaces is avoided. This arrangement presents the advantage of considerable production from the Working-surfaces, great economy in the motive power, as friction is reduced, owing to the limited distance traveled by the corn and the manner of spreading the same over the Working surfaces. There are also no shocks resulting from the accumulation of the material, and overheating is also prevented.

The disks or segments E and F maybe provided with working-surfaces on each face, so that they can be reversed when desired.

I claim as my inventionl. In a grinding-machine, the combination of a distribnti11g-plate, a removable sieve, a rotating disk having at its outer edge an annular grinding-face with a stationary grinding-disk, a. ring provided With openings to allow the grain to pass to the grinding-disks at the proper parts thereof, means for adj nsting the grinding-disks relatively to each other, and gatherers, substantially as described.

2. In a grinding-mill, the combination of two removable grinding-disks, the upper one stationary and having serrated surfaces and the lower one rotary and provided with lands and grooves L M N O l), anda ringJ, having openings to the grooves L, substantially as and for the purpose described.

In a grinding-mill, the combination of two grinding-disks, vone of which is rotary and has a series of lands and grooves, with a ring carried by and turning with the said ro- JLatin g disk and having openings to the proper grooves thereof, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subcribing witnesses.

AMBROISE MILLOT.

Witnesses:

T. Il. SIEBER, H. IIoNEGGEs. 

